indubitable /ɪnˈdjuːbɪtəbəl/ TEM8

• 1. 

  ADJ You use indubitable to describe something when you want to emphasize that it is definite and cannot be doubted. 不容置疑的 [正式]

  例：

  His brilliance renders this film an indubitable classic.

  他的出色表现让这部电影成为了毋庸置疑的经典。

• 2. 

  indubitably ADV

  例：

  His behaviour was indubitably ill-judged.

  他的行为明显是没经过思考的。